Cruciform Dental Drill Bit for Implant Socket Conformity
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Solution Overview
Problem
Current methods for preparing surgical sites for dental implants fail to accurately form openings that closely conform to the shape of dental implants and abutments, leading to suboptimal support and integration with the jawbone.
Innovation Solution
A dental drill bit with specific geometric configurations, including bullet-shaped and spherical frustum portions, is designed to create openings that match the shape of dental implants and abutments, ensuring precise fit and integration with the jawbone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional dental drill bits are used to prepare the surgical site, then the drilling process is simple and quick, but the resulting opening does not closely conform to the shape of the dental implant and abutment, leading to suboptimal support and integration
Solution Approach 1:
The drill bit is divided into multiple distinct portions: a first portion with a bullet-shaped contour that corresponds to the implant shape, a second portion with a spherical frustum that corresponds to the abutment shape, and a third portion that is the shaft. This segmentation allows each portion to independently contribute to forming the specific geometric features needed for optimal implant integration while maintaining manufacturability through modular design
Solution Approach 2:
Different portions of the drill bit are given different geometric qualities to match different requirements: the first portion has a bullet-shaped contour for implant conformity, the second portion has a spherical frustum for abutment conformity, and the third portion has a cylindrical shaft for drill mounting. This local differentiation of geometric properties enables precise shape control at each location along the drill bit
2Productivity
If successively larger diameter osteotomes are used for bone compaction, then the opening can be widened to receive the implant, but the process requires multiple steps and tools
Solution Approach 1:
Multiple functions that previously required separate tools and steps (drilling, shaping for implant, shaping for abutment, bone compaction) are merged into a single drill bit design. The bullet-shaped first portion and spherical frustum second portion work together in one continuous drilling operation to create both the implant receiving space and the abutment receiving space, eliminating the need for sequential osteotome steps
Solution Approach 2:
The drill bit is designed as a universal tool that performs multiple functions simultaneously: it drills the pilot hole, enlarges the opening to implant diameter, shapes the opening for implant conformity, and creates the abutment receiving space. This multi-functionality is achieved through the specific geometric configurations of the first and second portions that correspond to both implant and abutment shapes
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The drill bit effectively forms optimally shaped openings in the jawbone, enhancing the support for dental implants and facilitating successful osseointegration, thereby improving the stability and integration of implants with the bone.
Implementation Method 1
The first and second portions may also each include flutes for cutting/drilling into bone
Data Source
AI summary
A first dental drill bit for creating a particularly shaped osteotomy in human jawbones includes: a mounting shank and cutting head. The cutting head includes: four blades protruding from an axis of the bit, each blade having a thickness and being positioned 90 degrees to each adjacent blade to form a cruciform-shaped cross-section. Each of the pair of blades are positioned 90 degrees apart, and the blades of each pair are offset laterally a distance about equal to one-half of the blade thickness. Each blade has a shaped periphery that includes: a first radiused periphery; and a second radiused periphery. The first radiused periphery is shaped to form a spherical frustum-shaped socket portion when rotated about the axis of the drill bit, and includes embedded diamond particles. The second radiused periphery is shaped to form a bullet shaped socket portion when rotated about the axis of the drill bit.